package com.jee.support.thread;class UnresponsiveUI {	private volatile double d = 1;	public UnresponsiveUI() throws Exception {		while (d > 0)			d = d + (Math.PI + Math.E) / d;		System.in.read(); // Never gets here	}}public class ResponsiveUI extends Thread {	private static volatile double d = 1;	public ResponsiveUI() {		setDaemon(true);		start();	}	public void run() {		while (true) {			d = d + (Math.PI + Math.E) / d;		}	}	public static void main(String[] args) throws Exception {		// ! new UnresponsiveUI(); // Must kill this process		new ResponsiveUI();		System.in.read();		System.out.println(d); // Shows progress	}}